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require 'test/unit'
class TestProc < Test::Unit::TestCase
def test_proc
p1 = proc{|i| i}
assert_equal(2, p1.call(2))
assert_equal(3, p1.call(3))
p1 = proc{|i| i*2}
assert_equal(4, p1.call(2))
assert_equal(6, p1.call(3))
p2 = nil
x=0
proc{
iii=5 # nested local variable
p1 = proc{|i|
iii = i
}
p2 = proc {
x = iii # nested variables shared by procs
}
# scope of nested variables
assert(defined?(iii))
}.call
assert(!defined?(iii)) # out of scope
loop{iii=5; assert(eval("defined? iii")); break}
loop {
iii = 10
def self.dyna_var_check
loop {
assert(!defined?(iii))
break
}
end
dyna_var_check
break
}
p1.call(5)
p2.call
assert_equal(5, x)
end
def assert_arity(n)
meta = class << self; self; end
meta.class_eval {define_method(:foo, Proc.new)}
assert_equal(n, method(:foo).arity)
end
def test_arity
assert_equal(0, proc{}.arity)
assert_equal(0, proc{||}.arity)
assert_equal(1, proc{|x|}.arity)
assert_equal(2, proc{|x, y|}.arity)
assert_equal(-2, proc{|x, *y|}.arity)
assert_equal(-1, proc{|*x|}.arity)
assert_equal(-1, proc{|*|}.arity)
assert_equal(-3, proc{|x, *y, z|}.arity)
assert_equal(-4, proc{|x, *y, z, a|}.arity)
assert_arity(0) {}
assert_arity(0) {||}
assert_arity(1) {|x|}
assert_arity(2) {|x, y|}
assert_arity(-2) {|x, *y|}
assert_arity(-3) {|x, *y, z|}
assert_arity(-1) {|*x|}
assert_arity(-1) {|*|}
end
# [ruby-dev:22592]
def m(x)
lambda { x }
end
def test_eq
# [ruby-dev:22592]
a = m(1)
b = m(2)
assert_not_equal(a, b)
assert_not_equal(a.call, b.call)
# [ruby-dev:22599]
assert_not_equal(proc {||}, proc {|x,y|})
# [ruby-dev:22601]
a = lambda {|x| lambda {} }.call(1)
b = lambda {}
assert_not_equal(a, b)
end
def test_block_par
assert_equal(10, Proc.new{|&b| b.call(10)}.call {|x| x})
assert_equal(12, Proc.new{|a,&b| b.call(a)}.call(12) {|x| x})
end
def test_safe
safe = $SAFE
c = Class.new
x = c.new
p = proc {
$SAFE += 1
proc {$SAFE}
}.call
assert_equal(safe, $SAFE)
assert_equal(safe + 1, p.call)
assert_equal(safe, $SAFE)
c.class_eval {define_method(:safe, p)}
assert_equal(safe, x.safe)
assert_equal(safe, x.method(:safe).call)
assert_equal(safe, x.method(:safe).to_proc.call)
p = proc {$SAFE += 1}
assert_equal(safe + 1, p.call)
assert_equal(safe, $SAFE)
c.class_eval {define_method(:inc, p)}
assert_equal(safe + 1, proc {x.inc; $SAFE}.call)
assert_equal(safe, $SAFE)
assert_equal(safe + 1, proc {x.method(:inc).call; $SAFE}.call)
assert_equal(safe, $SAFE)
assert_equal(safe + 1, proc {x.method(:inc).to_proc.call; $SAFE}.call)
assert_equal(safe, $SAFE)
end
def m2
"OK"
end
def block
method(:m2).to_proc
end
# [yarv-dev:777] block made by Method#to_proc
def test_method_to_proc
b = block()
assert_equal "OK", b.call
end
end
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